printing-ipad/BLL/Pub.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;

namespace Jpsoft.BLL
{
    public class Pub
    {
        /// <summary>
        /// 修改配置文件中某项的值
        /// </summary>
        /// <param name="key">appSettings的key</param>
        /// <param name="value">appSettings的Value</param>
        public static void SetConfig(string key, string value)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

            if (config.AppSettings.Settings[key] != null)
                config.AppSettings.Settings[key].Value = value;
            else
                config.AppSettings.Settings.Add(key, value);

            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("appSettings");
        }

        /// <summary>
        /// 读取配置文件某项的值
        /// </summary>
        /// <param name="key">appSettings的key</param>
        /// <returns>appSettings的Value</returns>
        public static string GetConfig(string key)
        {
            string _value = string.Empty;
            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            if (config.AppSettings.Settings[key] != null)
            {
                _value = config.AppSettings.Settings[key].Value;
            }
            return _value;
        }
    }
}